Dempsy b



(No Model.) I p D. B. HANSON.

BAND SAW MILL.

No. 306,826. Patented Oct. 21, 1884.

Wrnlzsas: M KMQ z wg tically by means of a set-screw, k.

NETED STATES PATENT FFICE. I

DEMPSY l3. HANSON, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO SINKER, DAVIS8t 00., OF SAME PLACE.

BANDQSAW MILL.

SPECIFICATION forming part of Letters Patent No. 306,826, dated October21, 1884-.

Application filed August 25, 1884.

To all whom it may concern."

Be it known that I, DEMPSY B. Hanson, a citizen of the UnitedStates,residing at Indianapolis, in the county of Marion, State ofIndiana, have invented a new and useful Improvement in Band-Saw Mills,of which the following is a specification.

.My invention relates to an improvement in the supporting-pillar and thebracket for the upper or tension wheel in band-saw mills.

The objects of my improvement are, first, to adapt the supporting-pillarand the upper wheel-bracket in a band-saw mill to be used for aright-hand or a left-hand mill without change of patterns; and, second,to provide improved means for the. backward and forward adjustment ofsaid upper wheel for the purpose of guiding or aligning the saw, all ashereinafter fully described.

The accompanying drawings illustrate my invention. Figure l is a frontelevation. Fig. 2 isa side elevation. Fig. 3 is a plan, the upper end ofthe pillar being shown in section on theline a Fig. 2. Fig. 4 isapartialsection on the line y, Fig. 2, showing the arrangcmentof the adjListing-screws.

The pillar supporting the upper wheel, A, is aright-angled webbedcasting having two like faces, (land I), joined at the lower end byaquadrant web, c,.which forms a foot through which bolts are passed,securing the pillar in a vertical position to the bed-plate d. The upperportion of the corner formed by the faces a and h is cut away, forming arecess, a, in which is secured a cylindrical rod, f, of wrought iron orsteel. Said rod is parallel with and equidistant from both of the sidesa and b.

isa bracketadapted to sustain movable bearings IL and i, in which theshaft of the wheel A is mounted. Bearing it rests on trunnionsj j, andbearing i is adjustable ver- Bracket g is connected with rod f, so as toswing in a horizontal plane, and to slide vertically thereon by means oflugs Z Z Z,which are preferably bolted to the side of the bracket; ortheymay be cast therewith.

For the purpose of adjusting bracket gand the wheel which it carriesvertically, said bracket rests on the upper end of a screw, on,supported in a bracket, n, by a nut, o. The upper and under surfaces ofsaid. nut are rounded, so as to allow a slight swinging movement of thescrew.

(No model.)

For the purpose of adjusting wheel A backward and forward in ahorizontal plane, so as to cause the saw to run centrally on the wheels,(the lower one not shown, but designed to be mounted on ashaft restingin the bearings B B, or in any other well-known manneig) bracket 5] isextended backward over the face I) of the supporting-pillar, and isslotted at p p.

r is a set-screw,having its nut formed in the bracket and its endresting against the face of the pillar, while the capscrews s 8 passfreely through the slots 19, and are screwed into the pillar, the effectof screw r being to push the bracket from the pillar, and of.

screws 8 s to draw the bracket toward the pillar, thus providing a quickand sufficiently delicate adjustment, and clamping the bracket stronglyand firmly t0 the pillar at any desired point of adjustment.

The mill shown being understood to be a right-hand mill, it will beobserved that the only change necessary in the pillar and bracket 9 tomake a left-hand mill is to transfer the lugs Z to the opposite side ofthe bracket and turn the pillar on its outer corner as an axis aquarter-turn. Face a would then become the front, and face I) the side,of the pillar.

I claim as my invention 1. In a bandsaw mill, the combination of avertical pillar having two like faces forming aright angle, a singlevertical rod secured to said pillar near the intersection of said facesand equidistant therefrom, a bracket adapted to slide on said rod and tobe secured to either of the faces of said pillar, and a wheel supportedby said bracket and adapted to carry a bandsaw, all substantially asspecified.

2. In a bandsaw mill, the combination of a vertical pillar, a singlevertical rod secured to said pillar, a wheel adapted to carry aband-saw, a bracket supporting said wheel, and connected with said rodso as to slide vertically and to swing horizontallythereon, anadjusting-screw adapted to raise and lower said bracket, and adjustingand clamping 0o screws passing through said bracket and engaging saidpillar, all substantially as specified.

DEMISY B. HANSON.

Witnesses: I

JOHN W. RUssELt, H. IE. 11001).

